Bok choy, broccoli, cabbage, cauliflower and kale are just some members of the versatile cruciferous—or cabbage—family of vegetables. (Cruciferous means “cross-bearing,” and the plants’ four-petal flowers form the shape of a cross.) Canada’s Food Guide recommends that at least one of the seven to eight servings of fruit and vegetables we eat each day should be dark green. Here are some healthy reasons why you’ll want to make a large portion of those greens cruciferous.